. . "Group-2-kimberlite"@en . "Group-2-kimberlite"@en . "G2KMB"@en . "stable"@en . . . "Group-2-kimberliteĀ - A type of kimberlite. Group-2-kimberlite corresponds to micaceous or lamprophyric kimberlites. They are characterised by the presence of macrocrysts, phenocrysts and groundmass micas, which vary from phlogopite to tetraferriphlogopite. British Geological Survey Research Report RR/99/06, section 6.4."@en .